Kayakla atlamacılarda gerçek ve simulasyon atlayışları esnasındaki kas aktivasyonlarının karşılaştırılması

BİLAL ALBAYRAK

Kayakla atlamacılarda gerçek ve simulasyon atlayışları esnasındaki kas aktivasyonlarının karşılaştırılması

Thesis Type: Doctorate

Institution Of The Thesis: Ataturk University, Kış Sporları Enstitüsü, Beden Eğitimi ve Spor, Turkey

Approval Date: 2025

Thesis Language: Turkish

Student: BİLAL ALBAYRAK

Principal Supervisor (For Co-Supervisor Theses): Fatih Kıyıcı

Co-Supervisor: Deniz Bedir

Open Archive Collection: AVESIS Open Access Collection

Abstract:

Purpose: The aim of this study was to compare the electromyographic (EMG) activations of the gastrocnemius muscle during real ski jumps and virtual reality (VR)-based simulated jumps. Method: Fourteen elite male ski jumpers voluntarily participated in the study. EMG recordings were obtained from the gastrocnemius muscle during in-run, take-off, flight, landing, and outrun phases, both on a real K60 hill and within a VR-based ski jumping simulator. Surface EMG signals were collected using SENIAM-based electrode placement, and phase divisions were identified through synchronized video analysis. Data were normalized and statistically analyzed using paired t-tests, 2×2 ANOVA, and repeated measures ANOVA. Findings: The results indicated that gastrocnemius activation patterns were largely similar in both conditions. However, significantly higher activation levels were observed in simulated jumps during the flight and landing phases, suggesting greater reliance on distal muscle cocontraction strategies for postural stability. Result: The findings demonstrate that VR-based simulators substantially replicate the neuromuscular demands of real ski jumps, though they induce higher muscle activation in specific phases. This highlights the potential of VR simulators as safe and repeatable training tools, particularly for enhancing balance and stability strategies.